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Published on: August 8, 2022
Return to play with hypertrophic cardiomyopathy: are we moving too fast? A critical review
Jonathan A Drezner1, Aneil Malhotra2, Jordan M Prutkin3
1Center for Sports Cardiology, University of Washington, Seattle, Washington, USA jdrezner@uw.edu.
Insights
Hypertrophic cardiomyopathy (HCM) in young athletes poses risks for sudden cardiac death (SCD). While disqualification was standard, current evidence supports shared decision-making for safe sports participation with HCM.
Area of Science:
- Cardiology
- Sports Medicine
- Genetics
Background:
- Hypertrophic cardiomyopathy (HCM) diagnosis in young athletes creates dilemmas for safety, autonomy, and risk tolerance.
- Previous recommendations advised blanket disqualification from sports for athletes with HCM.
- Recent studies and cohort reports question the necessity of complete sports exclusion for HCM patients.
Purpose of the Study:
- To critically review evidence regarding sports eligibility for young athletes diagnosed with HCM.
- To examine the risks and benefits of sports disqualification in this population.
- To explore challenges in shared decision-making for athletes with HCM.
Main Methods:
- Literature review of epidemiological studies and cohort reports on HCM and sudden cardiac death (SCD) in athletes.
- Analysis of histopathological substrate of HCM in relation to exercise.
- Examination of risk factors for SCD in young athletes with HCM.
Main Results:
- HCM creates an unstable myocardial substrate, increasing ventricular arrhythmia risk during exercise.
- Young age and intense competitive sports are identified risk factors for SCD in HCM patients.
- Adolescent/young adult males and athletes in high-risk sports (basketball, soccer, American football) face greater risk.
Conclusions:
- Shared decision-making is increasingly endorsed in sports cardiology for HCM athletes.
- Evidence suggests a nuanced approach beyond blanket disqualification is warranted.
- Challenges remain in shared decision-making when consensus is not reached among all parties.
Abstract:
The diagnosis of a potentially lethal cardiovascular disease in a young athlete presents a complex dilemma regarding athlete safety, patient autonomy, team or institutional risk tolerance and medical decision-making. Consensus cardiology recommendations previously supported the 'blanket' disqualification of athletes with hypertrophic cardiomyopathy (HCM) from competitive sport. More recently, epidemiological studies examining the relative contribution of HCM as a cause of sudden cardiac death (SCD) in young athletes and reports from small cohorts of older athletes with HCM that continue to exercise have fueled debate whether it is safe to play with HCM. Shared decision-making is endorsed within the sports cardiology community in which athletes can make an informed decision about treatment options and potentially elect to continue competitive sports participation. This review critically examines the available evidence relevant to sports eligibility decisions in young athletes diagnosed with HCM. Histopathologically, HCM presents an unstable myocardial substrate that is vulnerable to ventricular tachyarrhythmias during exercise. Studies support that young age and intense competitive sports are risk factors for SCD in patients with HCM. We provide an estimate of annual mortality based on our understanding of disease prevalence and the incidence of HCM-related SCD in different athlete populations. Adolescent and young adult male athletes and athletes participating in a higher risk sport such as basketball, soccer and American football exhibit a greater risk. This review explores the potential harms and benefits of sports disqualification in athletes with HCM and details the challenges and limitations of shared decision-making when all parties may not agree.
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